itsmattkc
81c1922911
This makes the node system somewhat more high-level with the intent of making working with them far more flexible and stable. By making the architecture more abstracted, it becomes far less rigid which should allow us to do even more with it and make it much less crash prone.
123 lines
3.3 KiB
C++
123 lines
3.3 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2020 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "pan.h"
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#include "widget/slider/floatslider.h"
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namespace olive {
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const QString PanNode::kSamplesInput = QStringLiteral("samples_in");
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const QString PanNode::kPanningInput = QStringLiteral("panning_in");
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PanNode::PanNode()
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{
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AddInput(kSamplesInput, NodeValue::kSamples, InputFlags(kInputFlagNotKeyframable));
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AddInput(kPanningInput, NodeValue::kFloat, 0.0);
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SetInputProperty(kPanningInput, QStringLiteral("min"), -1.0);
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SetInputProperty(kPanningInput, QStringLiteral("max"), 1.0);
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SetInputProperty(kPanningInput, QStringLiteral("view"), FloatSlider::kPercentage);
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}
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Node *PanNode::copy() const
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{
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return new PanNode();
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}
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QString PanNode::Name() const
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{
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return tr("Pan");
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}
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QString PanNode::id() const
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{
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return QStringLiteral("org.olivevideoeditor.Olive.pan");
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}
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QVector<Node::CategoryID> PanNode::Category() const
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{
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return {kCategoryChannels};
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}
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QString PanNode::Description() const
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{
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return tr("Adjust the stereo panning of an audio source.");
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}
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NodeValueTable PanNode::Value(const QString &output, NodeValueDatabase &value) const
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{
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Q_UNUSED(output)
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// Create a sample job
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SampleJob job(kSamplesInput, value);
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job.InsertValue(this, kPanningInput, value);
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// Push it to our table
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NodeValueTable table = value.Merge();
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if (job.HasSamples()) {
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float pan_volume = job.GetValue(kPanningInput).data().toFloat();
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if (IsInputStatic(kPanningInput)) {
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if (!qIsNull(pan_volume) && job.samples()->audio_params().channel_count() == 2) {
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if (pan_volume > 0) {
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job.samples()->transform_volume_for_channel(0, 1.0f - pan_volume);
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} else {
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job.samples()->transform_volume_for_channel(1, 1.0f + pan_volume);
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}
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}
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table.Push(NodeValue::kSamples, QVariant::fromValue(job.samples()), this);
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} else {
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table.Push(NodeValue::kSampleJob, QVariant::fromValue(job), this);
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}
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}
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return table;
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}
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void PanNode::ProcessSamples(NodeValueDatabase &values, const SampleBufferPtr input, SampleBufferPtr output, int index) const
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{
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if (input->audio_params().channel_count() != 2) {
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// This node currently only works for stereo audio
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return;
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}
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float pan_val = values[kPanningInput].Get(NodeValue::kFloat).toFloat();
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for (int i=0;i<input->audio_params().channel_count();i++) {
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output->data()[i][index] = input->data()[i][index];
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}
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if (pan_val > 0) {
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output->data()[0][index] *= (1.0F - pan_val);
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} else if (pan_val < 0) {
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output->data()[1][index] *= (1.0F - qAbs(pan_val));
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}
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}
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void PanNode::Retranslate()
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{
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SetInputName(kSamplesInput, tr("Samples"));
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SetInputName(kPanningInput, tr("Pan"));
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}
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}
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